I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
blooey blooie bluey blowy bailey billowy blae bolo bale blue bile bole blew blow belle bialy boule bally belay belie billy below belly bully bailee bailie bellow billie billow boulle bullae bal bel
looey blooey flooey looie blooie flooie foley holey hooly cooly mooley dooly wooly
boo boob boobie booboo booby lobo looby